IA MODIFIED MASTERING BIOLOGY WITH E TEX
12th Edition
ISBN: 9780136781752
Author: Urry
Publisher: PEARSON
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Chapter 13.1, Problem 3CC
WHATIF? → A horticulturalist breeds orchids, trying to obtain a plant with a unique combination of desirable traits. After many years, she finally succeeds. To produce more plants llke this one, should she crosibreed it with another plant or clone it? Why?
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Biology 1 Assessment 3
26 of 40
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Finish
Miller, Timia
Polyploid plants form as a result of a beneficial mutation that often makes them larger and stronger than diploid plants. These plants form when a complete set of chromosomes fails to separate during meiosis creating plants with
extra chromosomes.
What type of mutation has this result?
O frameshift
O nondisjunction
substitution
O translocation
esc
4.
5n
You are a developmental geneticist studying flowering time variation in Arabidopsis. You perform a
mutagenesis screen to identify mutants in the photoperiod pathway. You conduct the screen and
find two different plants that show the same mutant phenotype. You then use a complementation
test. What is the predicted outcome of this test if both phenotypes are caused by mutations in
separate genes?
recover the wild type phenotype
overexpress the gene
O recover the mutant phenotype
. In the plant Arabidopsis thaliana, a geneticist is interested in the development of trichomes (small projections). A large screen turns up two mutant plants (A and B) that have no trichomes, and these mutants seem to be potentially useful in studying trichome development. (If they were determined by single-gene mutations, then finding the normal and abnormal functions of these genes would be instructive.) Each plant is crossed with wild type; in both cases, the next generation (F1) had normal trichomes. When F1 plants were selfed, the resulting F2’s were as follows: F2 from mutant A: 602 normal; 198 no trichomes F2 from mutant B: 267 normal; 93 no trichomesa. What do these results show? Include proposed genotypes of all plants in your answer. b. Under your explanation to part a, is it possible to confidently predict the F1 from crossing the original mutant A with the original mutant B?
Chapter 13 Solutions
IA MODIFIED MASTERING BIOLOGY WITH E TEX
Ch. 13.1 - MAKE CONNECTIONS Using what you know of gene...Ch. 13.1 - Prob. 2CCCh. 13.1 - WHATIF? A horticulturalist breeds orchids, trying...Ch. 13.2 - MAKE CONNECTIONS In Figure 13.4. how many DNA...Ch. 13.2 - VISUAL SKILLS In The karyotype shown in Figuro...Ch. 13.2 - Prob. 3CCCh. 13.2 - WHAT IF? A certain eukaryote lives as a...Ch. 13.3 - MAKE CONNECTIONS Comparc tho chromosomes in a...Ch. 13.3 - WHAT IF? After the synaptonemal complex...Ch. 13.4 - What is the original source of Variation among the...
Ch. 13.4 - The diploid number for fruit flies is 8, and the...Ch. 13.4 - Prob. 3CCCh. 13 - Explain why human offifuing resemble their parents...Ch. 13 - Prob. 13.2CRCh. 13 - Prob. 13.3CRCh. 13 - Prob. 13.4CRCh. 13 - A human cell containing 22 autosomes.and a Y...Ch. 13 - The two homologs of a pair move toward opposite...Ch. 13 - Meiosis II is similar to mitosis in that (A)...Ch. 13 - Prob. 4TYUCh. 13 - If we continue to follow the cell lineage from...Ch. 13 - DRAW IT The diagram shows a cell in meiosis. (a)...Ch. 13 - Explain how you can tell that the cell in question...Ch. 13 - EVOLUTION CONNECTION Many species can reproduce...Ch. 13 - SCIENTIFIC INQUIRY The diagram in quest ion 6...Ch. 13 - Prob. 10TYUCh. 13 - SYNTHESIZE YOUR KNOWLEDGE For selected answers,...
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- How has the wild version of a avocado plant been modified for human consumption ? what parts of the plants have been modified from the wild version, and how---selective breeding, genetic modification? Explain.arrow_forward%3D 14/15 What is the WORST question for a farmer to ask when determining whether or not to grow transgenic plants? Will the transgenic Will the transgenic plant help to Will the transgenic plant offer any Will the transgenic plant require more pesticides? plant help the farmer to produce information in increase the food studying human genes? supply? more clones? Music off Zoom In • O 8:25 Sign out Lenovo & 4. 5arrow_forward. Genomes A, B, and C all have basic chromosomenumbers (x) of nine. These genomes were derivedoriginally from plant species that had diverged from each other sufficiently far back in the evolutionarypast that the chromosomes from one genome can nolonger pair with the chromosomes from any other genome. For plants with the following kinds of euploidchromosome complements, (i) state the number ofchromosomes in the organism; (ii) provide terms thatdescribe the individual’s genetic makeup as accurately as possible; (iii) state whether or not it is likelythat this plant will be fertile, and if so, give the number of chromosomes (n) in the gametes.a. AABBCb. BBBBc. CCCd. BBCCe. ABCf. AABBCCarrow_forward
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